I see now. I didn't get that you meant to add the SSL certificate. And I agree that Google favors https now. They've made that quite clear as of the end of last year.
This certainly makes sense. I may be wrong in my assumption that the OP wants to publish content about products that are completely different from what is on the original site and also products that appeal to completely different customer types.
maybe, but I get the feeling he thinks he maybe slapped if he upgrades his existing site, so rather updating his site, he wants to spin it off into another site, his content maybe different, but that is not the point, he sells pottery related stuff, so his content would be pottery related, so now he would have two sites selling pottery stuff. I do not think it is the best idea, if you are going to sell pottery stuff, then it all should be on the domain he started off with as I see no real benefits or reasons to split the same product among two sites, and it will not benefit the first site as he would then let it sit while he works on his 2nd site, and the 1st site will start to degrade over time in search engines due to "lack of updates".... I am pretty sure the op knows how long it took for his first site to start making money, and setting up a 2nd site with similar related products will not be any faster, and it will take just as long to get it going (if not longer...) This is exactly why I would just upgrade the first site, and continue with updates! setting up a new site will have no immediate benefits. however, if he is hell bent on setting up a 2nd site for no real reason, then he could send a backlink from siteA to SiteB and that will pass some link juice from his original site to his new site, but do not link SiteB to SiteA (one way link only) If you have done everything right, then it can take as long as a year to get a brand new site off the ground, and this will certainly depend on niche, and for this reason, this is why I would not setup a 2nd site with similar related products.... I have already gave my thoughts in previous posts... at this point, I guess I am just blowing smoke because the op is going to do what he wants to do anyways....